This is probably the cheapest and best Dremel sander you can make without any modification.

It is really safe since its just soft plastic it is well balanced and most of all no weight at all so no unnecessary vibration.

Step 1: This Is What I Used

Spice bottle top
Dremel mandrel
Double sided tape
Sandpaper according to preferred grit.

Step 2: Different Grit Discs

I traced a bunch on various grit papers using the cap and cut them with a sharp scissor.

In case you have a few rough edges don't worry once you have cut a few align them and holding them in the center just run them across a sheet of sandpaper rotating each time.

Step 3: Assembly

There isn't any real assembly just fix your mandrel to the cap in this case there was already a dead center hole.

Stick on your double sided tape attach your sandpaper and your good to go.

If you want to go a step further you could even use a paper punch to cut out the additional holes so that it collects the dust.

Step 4: Finished Product

The only thing that you will spend time on is cutting the sandpaper discs.

Hope this helps other Dremel or rotary tool users.

Appreciate any feedback or ideas

Step 5: You Could Polish / Buff Too

You can even stick some felt , chamois leather, jewelry cloth etc on a spare spice cap and have a decent buff wheel to cover larger areas for that final finish.